The coffee mug
An award ceremony. A scientist, also the awardee, was talking about the importance of thinking from outside the comfort zone; popularly, it is known as out-of-the-box thinking. He shared many examples which had helped him get to the bottom of the invention for which he was awarded. The discourse, followed by a standing ovation and a high tea, was to become a topic of discussion for a long time to come.
In between, when the scientist went home tired, he was desperately in need of a hot cup of coffee. For nearly an hour, he looked in vain at all the places his programmed mind could think of; finally, he gave up and settled for another mug.
The next morning, when he woke up and went to dust the Altars, as it were, he found the mug lying there. He was surprised to discover how, the night before while looking for the mug, his mind did not consider the altar as an option.